Headphone



FIG. 1 is a front and right side perspective view of a headphone showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a right side elevational view thereof, the left side being a mirror image. 

The ornamental design for a headphone, as shown and described. 